Home speakers come in many sizes and designs, from small satellite speakers to very large 4-way floor standing boxes. Bookshelf speakers are, overall, the most popular style as they give a great sound from a moderate sized box, typically 12-20 inches tall, 8-15 inches wide and 7-15 inches in depth. The best of the book shelf speakers will have 2 elements; a woofer/mid-range and a tweeter. The best speaker designs will have 4-7 elements which make up the crossover network, which you cannot see without removing the woofer. Try a pair of speakers from on of these manufacturers: JBL, KEF, B&W, Klipsh, Infinity or Boston Acoustics.